Use `if` to run code only when a condition is `True`
Syntax:
`if condition:`
` statement`
Example:
`x = 10`
`if x > 5:`
` print(“x is greater than 5”)`
Use `elif` for additional conditions
Example:
`if x > 10:`
` print(“x is greater than 10”)`
`elif x == 10:`
` print(“x is 10”)`
Use `else` for the default case
Example:
`if x > 10:`
` print(“x is greater than 10”)`
`else:`
` print(“x is 10 or less”)`
Use comparison operators:
`==`
`!=`
`>`
`<`
`>=`
`<=`
Use logical operators:
`and`
`or`
`not`
Example with `and`:
`if x > 5 and x < 15:`
` print(“x is between 5 and 15”)`
Example with `or`:
`if x < 5 or x > 15:`
` print(“x is outside the range”)`
Example with `not`:
`if not x == 10:`
` print(“x is not 10”)`
Use indentation to define the code block
Use nested `if` statements when needed
Example:
`if x > 0:`
` if x % 2 == 0:`
` print(“positive even number”)`